hd64338342hw Renesas Electronics Corporation., hd64338342hw Datasheet - Page 81

• Manufacturer Part Number: hd64338342hw
• Description: Renesas 8-bit Single-chip Microcomputer H8 Family/h8/300l Super Low Power Series
• Manufacturer: Renesas Electronics Corporation.

2.3.1
Data of all the sizes above can be stored in general registers as shown in figure 2.3.
1-bit data
1-bit data
Byte data
Byte data
Word data
4-bit BCD data
4-bit BCD data
Legend:
RnH:
RnL:
MSB:
LSB:
Data Type
Upper byte of general register
Lower byte of general register
Most significant bit
Least significant bit
Data Formats in General Registers
Register No.
RnH
RnL
RnH
RnL
Rn
RnH
RnL
MSB
MSB
15
7
7
7
7
Upper digit
6
Figure 2.3 Register Data Formats
5
Don't care
Don't care
Don't care
4
4
0
0
0 3
3
Lower digit
2
1
Data Format
LSB
0
Rev. 6.00 Aug 04, 2006 page 45 of 680
MSB
7
7
7
7
Upper digit
6
5
Don't care
Don't care
Don't care
4
4
0
0 3
0
3
REJ09B0145-0600
Section 2 CPU
Lower digit
2
1
LSB
LSB
0
0